文稿笔试面试java题

华为Java1．Java是从（C）A．AdaB．C++C．PasacalD．BASIC2．下列语句哪一个正确（B）AJavamachineBJavabyteD下列说法正确的有（CJava存取数据库能力的包是（Ajava.sqlB．java.awtC．java.langD．java.swing5．下列运算符合法的是（A）&&B．C．ifD．:=后，C的值是（CA．0B．1C．-1D．死循环7．下列哪一种叙述是正确的（D）下列语句正确的是（A下列哪种说法是正确的（A二、多项选择题Java程序的种类有（ABC类（Class）B．AppletC．ApplicationD．Servlet2．下列说法正确的有（）javac.exe能指定编译结果要置于哪个目录下列标识符不合法的有（newB．$UsdollarsC．1234D．car.taxi4．下列说法错误的有（）intprivateB．publicC．protected下列正确的有（callbyvaluecallbyreferencecallbyreferencecallbyreference下列说法错误的有（下列说法错误的有（Java语言中的方法属于类中的成员下列说法错误的有（三、判断题三、判断题BOOL: if(!a)orif(a)int: if(a==0)float constEXPRESSIONEXP=if(a<EXP&&a>-EXP)pointer:if(a!=NULL)orif(a==NULL)请说出const#define答案：1）constchara[]=a[0]=char*p=“world”;//注意p指向常量字符串sizeof（字节数）。sizeof(p),pchara[]="helloworld";char*p=a;coutsizeof(a)endl;12cout<<sizeof(p)<<endl;//4字节voidFunc(char{coutsizeof(a)endl;4100}irtualTherearetwointvariables:aandb,don’tuse“if”,“?:”,“switch”orotherjudgementstatements,findoutthebiggestoneofthetwoababs(abcout<<FILE;cout<<LINE FILE和LINE是系统预定义宏，这种宏并不是在某个文件中定义的，而是由编fn2(void),fn3(void),fn4(void);voidmain(void{String_onexit(fn1_onexit(fn2_onexit(fn3_onexit(fn4printf("Thisisexecutedfirst.\n"}int{printf("next.\n");return0;}int{printf("executed");return0;}int{printf("is");return0;}int{printf("This");return0;}The_onexitfunctionispassedtheaddressofafunction(func)tobecalledwhentheprogramterminatesnormally.Successivecallsto_onexitcreatearegisteroffunctionsthatareexecutedinLIFO(last-in-first-out)order.Thefunctionspassedto_onexitcannottake #ifdefcplusplus＃i＃iusingnamespacevoidOrder(vector&data)//bubble{intcount=data.size()inttagfalsefor(inti=0;i<count;i++){for(intj=0;j<count-i-1;{if(data[j]>{tag=trueinttemp=data[j];data[j]=data[j+1];data[j+1]=temp;}}if(!tag)break;}}voidmain(void{ifstreamin("c:\\data.txt");if(!in){cout<<"fileerror!";}intwhile{}if(!out){cout<<"fileerror!";}for(i=0;i<data.size();i++)out<<data[i]<<"?;structNode{intdata;Node*next;typedefstructNodeNodeNode*ReverseList(Node*head)//链表逆序{if(head==NULL||head->next==NULL)returnhead;Node*p1=head;Node*p2=p1->next;Node*p3=p2->next;p1->next=NULL;while(p3!=NULL){p2->next=p1;p1=p2;p2=p3p3=p3->next}p2->next=p1;head=p2;returnhead;}Node*Merge(Node*head1,Node{if(head1==NULL)returnhead2;if(head2==NULL)returnhead1;Node*head=NULL;Node*p1=NULL;Node*p2=NULL;if(head1->data<head2->data{head=head1;p1=head1->next;p2=head2;}{head=head2p2=head2->next;p1=head1;}Node*pcurrent=headwhile(p1!=NULL&&p2!={if(p1->data<=p2->data{pcurrent->next=p1;pcurrent=p1;p1=p1->next}{pcurrent->next=p2;pcurrent=p2;p2=p2->next}}if(p1!=NULLpcurrent->next=p1;if(p2!=NULL)pcurrent->next=p2;returnhead;}次要求用递归方法进行。(Autodesk)Node*MergeRecursive(Node*head1,Node{if(head1==NULL)returnhead2;if(head2==return